Bobbin



W. E. KIEFER May 14, 1935.

BOBBIN Filed July 8, 1955 [650, Z. er-

Patented May 14', 1935 UNITED STATES PATENT OFFICE,

BOBBIN' William E. Kiefer, Allentown, Pa.

Application July 8, 1933, Serial No. 679,549

Claims.

This invention relates to improvements in bobbins.

Bakelite and similar synthetic resin materials are well suited for use in textile bobbins, as ma- 5 terial for the head flanges, for example, and particularly for use in steaming and other bobbins which are subjected to moisture and in bobbins where a minimum of weight is desired. In general, there are two classes of bakelite materials available for this purpose. One of these consists of a laminated body of paper or fibre impregnated and bonded with the synthetic resin; while the other consists of layers of fabric, such as canvas and linen similarly impregnated and bonded with the synthetic resin. Ofthese two materials, that having the paper base possesses all of the necessary characteristics for use in bobbin heads with the exception of strength. This material is relatively smooth, is practically non-absorbent to water, and is well able to withstand abrasion of the character to which bobbin heads are normally subjected. Bobbins provided with heads or flanges made of this material have proved unsatisfactory in the industry, however, by reason of a tendency of the edge to fracture when dropped upon the floor or subjected to like blows from other sources. The bakelite-impregnated fabric bodies, on the other hand, possessing all the requisite strength are unsuited for use in bobbin heads by reason of the roughness at the edges of the heads where the edges of the fabric laminations are exposed, since there is a tendency for this roughness to abrade and damage the yarn coming in contact with it. Since in the use of bobbins the yarn requently is withdrawn in an axial direction and frictionally engages the edge of the head over which it is drawn, heads made of the fabric base synthetic resin-impregnated materials have heretofore been found impracticable. I

I have discovered a means whereby synthetic resin materials such as described may be successfully used in the heads or flanges of bobbins to provide an entirely practicable bobbin structure and one which utilizes to full extent the desirable characteristics of these materials.

In the attached drawing:

Figure 1 is a view in perspective of a bobbin made in accordance with my invention;

Fig. 2 is a fragmentary view showing one end of the bobbin and illustrating the manner in which the yarn is withdrawn from the latter;

Fig. 3 is a view in perspective of bakelite mate ial suitable for manufacture of the bobbin heads of the character shown in Figs. l and 2;

,Fig. 4 is a view of one end of a bobbin showing a modified head made in accordance with the invention, and

Fig. 5 is a view in perspective ofa piece of the synthetic resin-impregnated material from'which 5 bobbin heads of the character illustrated in Fig. 4 are made.

With reference to Figs. 1 and 2 of the drawing, the bobbin therein illustrated comprises heads'or end flanges 1, these heads or flanges consisting 10 in the present instance of integrally-bonded bodies of bakelite-impregnated material of the character illustrated in Fig. 3. This material consists of face portions 3 and 4, each of superimposed layers of paper or similar fibrous matel5 rial; while an intermediate portion 5 consists of superimposed layers of a suitable textile fabric such as canvas or linen, the face and intermediate portions being impregnated and bonded with the synthetic resin into a unified or integral 20 body. In forming the heads I, disks of suitable size are formed from the material, and these disks are then recessed circumferentially, the recess 2 embracing the intermediate portion 5 of the 'material. That portion of the head disk, 25 therefore, which comprises the fabric is recessed below the edge portions of maximum radius. It will be apparent that with this construction, and as indicated in Fig. 2, yarn drawn from the bobbin in an axial direction can contact only with the portions of the head comprising the laminated paper, which, as previously set forth, is inherently smooth and incapable of damaging the yarn. The fabric portion of the head is conflned to a position in which the yarn cannot normally contact it, yet this portion is so arranged that it confers upon the head as a whole all the relatively great strength which is inherent in this type of bakelite material.

In Fig. 4 I have illustrated a modified form of head falling within the scope of my invention. In this case the head is made of the material shown in Fig. 5, wherein one face portion 6 consists of the laminated paper, while the other face portion 1 consists of the laminated fabric previously described, all bonded into an integral body by the hardened synthetic resin. Preferably as illustrated, that portion of the material comprising the laminated paper is of greater width than that having the fabric base, so that when the disk constituting the bobbin head is rounded at the edges, as illustrated in Fig, 4, the portions of greater diameter come within the portion 6. Also, this paper base portion 6 of the head is placed on the inside or toward the theyarn and whereby the strength-conferring fabric portion of the material is confined entirely to a position where under all normal conditions the yarn cannot come in contact with it.

It will be apparent that there maybe many other embodiments of the invention and that the latter is'not confined to the two forms of t construction ,shown in the drawing.

I claim:

1. A textile bobbin having a head consisting of a laminated disk comprising layers of paper and textile fabric both impregnated with a hardened binder, said paper extending radially beyond the fabric to form the extremeperipheral section of the disk from which the fabric is excluded, said peripheral section providing a smooth bearing surface for yarn withdrawn axially from the bobbin over the edge of the head and preventing contact of said yarn with the fabric.

2. A textile bobbin having a head consisting of a laminated disk comprising layers of paper and textile fabric both impregnated with and bonded together by a hardened synthetic resin, said fabric embracing substantially the entire face area of the disk but being excluded from the extreme peripheral section of the disk, said peripheral section being formed'to provide a smooth bearing surface for yarn withdrawn axially from the bobbin over the edge of the head and pre? venting contact of said yam with the fabric.

. I 3. A textile bobbin having a head consisting of Y a laminated disk comprising layers of paper and textile fabric both impregnated with a hardened binder, said layers comprising at least two of paper separated by an intermediate fabric layer and said paper layers being extended radially beyond the fabric layer and being formed at their peripheries toprovide a smoothv bearing surface for yarn withdrawn axially from the bobbin over the edge of the head and preventing contact of saidyarn with the fabric.

4. A textile bobbin having a head consisting of a laminated disk comprising layers of paper and textile fabric both impregnated with a hardened binder, said layers comprising at least two of which the layer at the inner surface of the head is of paper. and is extended radially beyond the fabric layer to form an extreme peripheral section providing a smooth bearing surface for yarn withdrawn axially from the bobbin over the edge of the head and preventing contact of said yarn with the fabric. v

5. A textile bobbin having a head consisting of a composite laminated disk comprising layers of paper and textile fabric all impregnated with and bonded together by a hardened synthetic resin binder, said layers comprising at least two of which the layer at the inner surface of the, head is of paper and is extended. radially beyond the fabric layer to form an extreme peripheral section providing a smooth bearing surface for yam withdrawn axially from the bobbin over the edge of'the head and preventing contact of said yarn with the fabric layer.

. WILLIAM E. KIIEF'ER. 

